Integrated Dropper Tube Structure for Accurate Dosing
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Solution Overview
Problem
Existing drop-type drug tubes face challenges such as narrow discharge cross-sectional areas leading to inaccurate dosing, difficulty in aligning drug injection devices, high defect rates during manufacturing, and inefficient space utilization due to separate bonding of body and cover parts.
Innovation Solution
The method involves integrally injection-molding the body and cover parts with angled upper and lower insertion parts to facilitate easy drug injection, minimize defects, and maximize space utilization, using materials like ultra-high molecular weight polyethylene (UHMWPE) to enhance durability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the body part and cover part are separately injection-molded and then bonded, then manufacturing flexibility is improved, but manufacturing complexity and defect rates increase
Solution Approach 1:
The patent merges the body part and cover part into a single integrated component that is injection-molded as one piece. This eliminates the bonding process between separate parts, reducing manufacturing steps and potential defect sources while maintaining design flexibility through the integrated structure.
2Volume of moving object
If the drug discharge part has a narrow cross-sectional area, then space utilization is improved, but dosing accuracy and alignment difficulty increase
Solution Approach 1:
The patent introduces angled upper and lower insertion parts that extend from the drug discharge part at predetermined angles. This dimensional extension creates a larger effective discharge area while maintaining compact storage volume, improving both dosing accuracy and alignment ease without sacrificing space efficiency.
3Stability of the object's composition
If the upper insertion part and lower insertion part are bonded together, then structural stability is improved, but manufacturing complexity increases
Solution Approach 1:
The upper insertion part and lower insertion part are designed as integral components of the single injection-molded body, eliminating the need for separate bonding operations. The angled configurations provide inherent structural stability while simplifying manufacturing to a single molding process.
4Productivity
If multiple drop-type drug tubes are placed and processed simultaneously, then productivity is improved, but process difficulty and defect rates increase
Solution Approach 1:
The patent designs the integrated body structure with distinct functional zones (drug accommodation part, angled insertion parts, and discharge parts) that can be independently optimized. This segmentation within the integrated structure allows for standardized mass production while maintaining ease of operation through consistent, simplified geometry across multiple units.
Data Source
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AI summary
Provided is a drop-type drug tube. The drop-type drug tube includes a body part which defines an outer appearance and in which a drug is accommodated, and a cover part integrated with the body part and provided to be removed when the drug is used. The body part includes a drug accommodation part having an internal space to accommodate the drug, a body support part provided to extend to the outside of the drug accommodation part, an upper insertion part inclinedly extending upward from the drug accommodation part and the body support part so as to be away from the cover part, and a lower insertion part provided to face the upper insertion part and inclinedly extending downward from the drug accommodation part and the body support part so as to be away from the cover part. Injection molding is performed in a state in which a mold is injected between the upper insertion part and the lower insertion part to define the internal space, and after the mold is removed, the drug is put into the internal space, and the upper insertion part and the lower insertion part are bonded to each other. As a result, a manufacturing defect rate may be reduced by having a structure with low process difficulty.